Paper-cutting machine.



6. 0 9 .I 2., l ..L N U Tu D E T N E ml A P um .l D R An H am Tu. 9. 1|.1.... oo 2 o0 nw N .PAPER CUTTING MACHINE.

APPLICATION FILED HAB.. 28, 19'05.

5 SHEETS-SHEET l..

l I r l l l l l x a l A l l l n ATTORNEY WITNESSES:

PATNTED JUNE 12, 1906. Hmm.

5 8HEETB`SHBET 2,

PAPER CUTTING MACHINE.

APELIUATIOR FILED Lanza, 1905.

MSN Nf N LL.

ATTOR N EY PATENTED JUNE l2, 1906.

AFPLIUATION FILED MAILZB, 1905.

5 SHEETB-SHEET 3.

K/X/ /2 my No. 823,119. PATBNTED JUNE l2, 1.906.

' J.. G. BARBIE.

PAPER CUTTING MACHINE.

APPLICATION FILED MABLZS, 1905.

5 SHEETS-SEEET 4.

.m l v 1 n v x.

PATENTED JUNE 12, 1906 J. G. HARDI. PAPER CUTTING MACHINE.

llllmnil @N um .si

NNW

'wn'NEssEa in laper-Cutting Machines,

"" "rvr,

PAPER-CUTTING. MvAol-nne.

Specification of Letters Patent.

Application led March 28,

Patented .iur-ae Eff.,

1905. Serial No. 252,595.

fo tu zii/2,0m it may concern:

Be it known that I, JAMES G. HARiDrE, a citizen of the United States ofAmerica, and a resident of the'city of Canton, county of St. Lawrence,State of New York, have invented certain new and useful Improvements ofwhich the following isa specification.

My invention relates to paper-cutting I nachines, and more particularlyto that class of paper-cutting lmachines which are driven by' power andare adapted to cut stacks of aper of various dimensions as well as totrim ooks and perform other similar kinds of work,

The object of m invention is to provide a machine of this c ass whichshall be simple and effective iii its construction and o eration, whichshall be capable of handling a wide variety of work more expeditiouslyand conveniently than has beenpossible with the machines heretofore inuse, and one in which special provision is made to prevent injury to t epaper while it is being held or clamped for the operation of cutting.

My invention consists in providing a suitable framework which com rises,essentially, two side uprights secure to a horizontal table or bed whichis adapted to receive the paper in stacks or other form, in providinvertical guides which extend above the ta le, mounting a` cutter-bar insaid guides nd .connecting it to cranks secured Vto a 'Nirank-shaftwhich is journaled in the frame;

in transmitting power to said crank-shaft by means of elliptic gearsfrom a shaft which is driven at-a uniform speed, so that the descent ofthe cutter-bar consumes a greater amount of time than its ascent; inproviding a power-clamp and means for causin the clamp to descendirl-'advance of the kni e until it strikes'the paper and means forcausing the clamp to remain in contact with the paper until the knife'isfree andclear above it on its return stroke; in providing means forvaryin the pressure exerted by the clamp upon t e paper; means forincreasing the pressure of the clamp upon the paper in successiveincrementso predetermined amount between the times when the clamp andthe knife first strike the paper, the organization. of the parts bein`'such that the excessive pressure produce r`when. the motion of thevclamp is arrested byjirst coming in contact with the paper-that is, whenthe friction beins to slip-is eliminatedor reduced to a harmless amount,and in the novel construction of the subclain ing it.

My invention consists, ifi it, ing a novel means for am andautomatically stoppi in the cycle of operandi. struction of the gage mecfor actuating the saine, and in features to be hereinafter mor pointedout and described.

In the drawings acconip..nyin2 ing-part of this speciiication, Yi" sideview of the machine. partially in section, on li'f 3 is a frontelevation, line 3 8 Of Fig. 1. n. si is a 4 of Fig. 3. Fig. 5 is an enthesubclamp. Fig. 6 is a portion of the subclamp. Figs enlarged sectionstaken on line "i i showing different op main clainp-bar-actua r sin. 9is a partial section througgli the out and blade and clamps, showingferent operative positions. iii tial planview of the back ga arrangedfor trimming bool side view of the saine, and i on line 12 12 of Fig.1U. Rg section through the rock-sha? 7G, i. cylinder 71, andthececilia-ting fra me. s ing one of the hooksdrawn outwariy in itsnon-engaging position,

The reference cli saine sense throughout specification.

The main framework ofthe macliiiie corisists, essentially, ofthenprighte' at the sides pand means for op.

of the machine and the table or bed If.. The g5 u rights are providedwith exte i ons 3, w (il are located near the iront ci' niachine andextend some distance above the table and serve the purpose of tocutter-bar and the cianipoara, 'Vi "s tensions are tied together oy t`girder or beam e. A represents l pa er.

umeral 5 .represents the cuttenbar.

it' has the usual'cuttenblade G secured to it, and it is provided .atits-ends with balls ier the upper ends of the connectingaods 8. A iink 9is pivoted to the beam and the cutter-ban 5 in the usual manner to givethe cutter-bar a transverse motion, as is ywell und f toed. 10represents a crankshaft wliic s the cranks 11 secured to its ends.These'cranks i V] hen the roclesliaft '2S ver, by means of the`set-screw 31.

vdriven at luniform sp atter shaft is also secured the gear 1), engagesthe pinion 20, loosely mounted on l. 21, and itis engaged .by the leverare provided withballs 12 for the lower ends of the connecting-rods '8.

13 is an elliptic gear secured to the crank shaft, and it is engaged bythe corresponding elliptic gear 14, mounted on the shaft 15. rtheelliptic gear 13 is so located on the crankshaft 10 that that portieriof the pitch-line of said gear having the smallest radius is in eregagement with that portion ol the gear 14 of greatest radius at the timewhen the cutterbar is about in the middle of its ascenriling stroke,from which it results that the veloc ity ratio between the crankshaft1() and the intermediate shaft 15 is constantly changing and is greatestduring the ascent of the cut# ter-bar and least during its descent.

I prefer to so 'form the elliptic gears that the ascent of theeutter-barshall take place during about one hundred degrees of the revolution ofthe intermediate shaft 15 and its descent during the remaining twohundred and sixty degrees. The purpose of this construction is notmerely to obtain a relatively quick return and slow descent of thecutter-bar, but also to obtain a more uniform descent. When thecrank-shaft is eed the cutter-bar moves at highest speed at the middleof its stroke-,Withfthe result that when the cutterblade strikes a stackof aper near the iniddle of its descending stro re it partak'es of' the1nature of a blow, causing severe strains upon. the machine. it will bevseen that by mea is of my improved construction tle 'machine may be runat much higher speed and the commencement of the /cut for stacks ofditerent heights will be much more uniform than with the constructionheretofore in use.

The gear 16, secured to the shaft '15, engages the pinion 17 on theshaft 18, on which which the shaft 21. The pinion 53D is secured to aclutch 22. The clutch 22 is preferably some torni of friction-clutch,and lit may be o1q any approved construction.

23 is a cone slid ably mounted on the shaft 24 in such .a Way that whenthe cone 23 is moved away from the clutch 22 the engagement of the lever24 with the cone Z3 will put the clutch into action and cause the pinion20 to revolve with the shaft 21.

. 25 is a groove in the cone 2B, which is gaged by the pin 26, securedto the iever 27, which is mounted on the rock-shaftl is turned to theleft, the clutch 22 thrown' into action, and when it is turned to theright it is thrown out oi action.' p

The lever 29 is rigidlyseeured to the shaft 28,. and'it is provided witha lug 3() and set-- screw 31. 'lhe lever 32 mounted on the on isadjusted Ollsh'fit 28, and its position there A. ivcightei'i arm 33 islooseiy mounted on the shaft 15 beside the gear 1G, and a lug 34 securedto (the gear 16 in the path et the weighted arm 33, so that as said gearrevolves the lug 534i will engage the weighted arm 33 and litt it to itshighest position, after passing which, however, it drops by gravity andstrikes theY lever 32 on the shaft 28, thereby turning said shaft andmoving the cone 23 toward the clutch 22 and throwing said clutch out ofengagement.

l t is thus seen that the clutch 22 is thrown out ol engagement at apredetermined point in the revolution of the shaft 15, this point beingat the time when the cutter-bar has just returned to its highestposition.

A hand-lever 35 is securei oi the shaft 28. rlhe machine is startedbymeans et this hand-lever when the paper has been adjusted. to a properposition, and itis automatically stopped by the Weighted arm as soon asthe cutter-bar has returned to its highest position, A pinion 36 issecured to a clutch 37 and engages the gear 16. ri`he clutch is operatedby a cone 38 and lever 39, mounted on the rock-shaft 28 in the samemanner as the clutch clutch 37 is thrown out of" engagement when theclutch is thrown in, and vice versa. 'ihe shaft 40, on which the clutch37 is yniounted, is stationary7 and when the clutch is thrown intoengagement it acts as a brake, tending .to retard the motion oi'" thegear 1, which is in engagement with the pinion 36.

The details oi the clutclns 2') and 37 aile not shown, as they form nopart of 'my present invention and it is obvious that any of thewell-known forms of ifiictioinclutches which'inavl 'i 'anged to bethrown into and out of er mt by making proper connectio'nsv a 'movablemember, such the rock-shaft 28, would answer for the purpose, Thebeltavheel 41 shaft 21 and ifs ad aptcd to be belted. to any convenientsource o'ipowor, ably made of sufficient weight to answer at the sametime for the purposetof a fly-wheel.

Mounted in guides in the upright exteny sions 3 immediately behind thecutter-,bar 5 is the main clamp-bar n'iediately beneath 'themain'clamp-bar ,42' and adapted to move up and down the-saine guides is thesubclamp 43. The subclamp t3 is adapted to be operated manually throughconne/ctil ns which will presently be explained ally by its engagementwith the main clamp4 bar 42, which descends upon the subclamp and forcesthe'latter down upon the stack oi paper position durirnT the:

to. hold the saine .in i Ppi- A but 'arg1- cuti--ig operation. Y ic sui, amp is tant,

weight `is counterbalanced by springs oi otherwise, se that i mwa rstends to rise-and comparedwiththe main clamp-bar andit.4

make contact with the bott-em of the maisl L12, and mounted i1 1- l tothe Jfront end 22., except that the lis secured te thel l,

or nie'chanicalfly andfautomatici 35 contact with the main clamp-bar 42.

esame clamp, the normal position of thel main clamp when the machine isat rest being' at the top of its throw.

The subclainp consists ol a longitudinal vertical web al andrearwardly-projecting lingers 45, (sce Figs. 5 and 6,) and it hassecured to its under surface an elastic sli-oc Lto, preferably inade offelt, leather', or other coinpressible material. At the lront edge of xothe lower surface of thc subclainp is rib 47, which extends down belowthe main surl'acc ol the body of the sube-lamp a distance somewhat lessthan the thickness of the elastic shoe 46, so that when the subclanipexerts i5 pressure upon the surface of' the stack el paper the rib 47will be out of contact with the paper. The purpose ol the elastic shoeis to prevent creasing or indenting the paper sheets of the stack ofpaper when pressure is zo exerted upon the subclainp, and the purpose ofthe rib 47 is to present a straight metallic edge close to the line ofthe cut. Pivotally secured to the ends of the subelamp are the links 48,and pivotally secured to the lower ends of said links are the levers 49,which latter are rigidly attached to theroclr-shaft 50.

A hand-lever 51 is pivotally mounted 'en the bracket v52,.secured to thefront of the i' machine, and the said hand-.lever has a forked 3o endwhich engaves a in in the lever 53, secured to the roc @sha 't 50. Alever 54 secured to the rock-shaft 50, and a siningL 55 is attached tothe end oi said lever ol sulicient strength to raise the subclainpandkeep it in A lever 56 is also secured to the rock-shaft 5() andconnected, by means ofthe links 57, to the A foot-'treadle As will beapparent from the above expla 4o nation the subclanip may be brought doi vupon the paper either by the hand-lever 5l. or by the foot-lever '58,and the direction of the motion of both they handlever and thefoot-lever is the same as that oi the subclamp. The purpose of havinffthe subclamp operate independently. or the main clarnp-bar is to enablethe operator to bring y the subclamp down to the stecker' paper, so asto determine exactly where the line oi" cut 5o is going to take placebefore 'the power-clutch is thrown into action. v

The main clamp-bar 42 is of sulicient strength to give it greatrigidity. it isprovided with rearward projections 63, correH spending.to the rearwardiy-projecting` 'liaV gers, 45 of, the subclamp and itslower surface isplanedso-as to accurately'tit ythe upper sur.

' faceA Q the-'subclanipwith which it makes contactl' The main clamp-bar42 is provided 6o With-a stud 60, which is mounted on a' roller lmvhichroller overhangs the cutter-bar 5,

so that when the cutterbar rises its top surfacewillengage the roller 6land carry with it the main clamp-bar and` the subclainp. At

'35 all times except vwillen-the subclanip .is operated manually thesubi-.la mp and the i'nain clan'xp-bar act togetlur as a single member.'lhe distance between the cuttingn edge of the linit'c ("3 and the topsurface ol' the knife-bar is such that when the knife-bar engages theroller (il the cuttingl edge olVl the knii'e shall be above the lowersuiace ol' the clamp. This insures the knilo being' free and clear abovethe top ot the stack oi" paper before the clamp has been withdrawntherefrom, thus `preventing,l any disturbance ol the stack which mightresult from the movement ol' the knife in contact with. the l'ront l'aceot the stack if the stack was not secured by the rlainp.

At its ends the clanip-bar 1L is connected with the links (lll by meansol the bindingscrews and the anjusti1ig-scr ws (36. The links (il areprovided :it their lower ends with elongated slots (37, in which operatethe studs ('38, fixed to the levers (Si), said. levers being keyed tothe roe.l;shalt '70. The elainp in the drawings is shown resting upon astack of paper, aout having just been made and thel cutter-bar beingl inabout the middle of its lreturn or upvv'ardstrolie.

The clamp-bar nieves 'downward from its highest position with thecutter-bar by gravity, carrying the subclamp with it, the lower orcontact su rliace ci the subclalnp being always slightly in advance ofthe cutting edge 9 5 et the knife-blade until its movement is arrestedby contact with the paper, at which point and just before the cuttingedge of the knife-blade has reached the pa er the stud 68 in the lever69 engagesthe en( of the slot 67, 10o bringing the appropriate pressureto act upon the clamp-bar by means of the friction mechanism which lwill now proceed to describe.

Rigidly secured to the rock-shaft 70 is a Jfriotion-cylinder 'Z l, andmountedl on this 105 irictien-cylinder are a plurality cifrictionclarnps each consisting of an upper piece 72 and a lower piece73, united to the former by means oi' bolts 74 and 7" The cylindricalbores of the friction-clamps are provided. 1ro

with a lining 7 6, of leather or other suitable' material. The upperpart 72 cf the frictionclamps is provides with rearwardly-forojectl ingends 77, which carry the adjustable banking-bolts '7S andforwardlyproiecting; arms U5 79, which carry the adjusting-screws 50.

ivotally mounted en the rock-shaft is lan oscillating frame rfiiii'ih.consists 'oli the side members Si, joined by an end piece` 82 and by theshafts `and` 84;, and each side 1go piece is provided with an arm 85.'carrying the 'iin 86, which engages the earns 87, keyed to t 1e shaftl5. Mounted on the shaft 83 of the oscillating frame' are a'plurality'ofhooks 258 equal in number to the number of friction- 1 2 5 clamps, eachhook being adapted to engage .one of said cla-inps. The' .hubs of thehooks $8, which encircle the shafi, are split and rovided with abinding-screw, which may lie adjusted to give a certain amountoifrc-,13o

tion between the hub and the shaft for the purpose of causing the hooksto remain in whatever position they are left. A. rod 89 ispivotally-attached to each of said hooks`and extends 'forward throughthe front plate 82 of the oscillating frame, where it terminates in aknob conveniently accessible to the operator of the machine.

As will .be apparent from the drawings, the revolution of the cam 87will cause the oseillating frame to oseillate, and during the downwardmovement of said frame each hook 88 which is thrown inward to itsengaging or operative position, as shown in Fig. 4, will engage itscorresponding friction-clamp and carry said clamp with it and by virtueof the friction between the friction-clamp and the friction-cylinder 71will cause the cylinder and the rock-shaft 70 to move in unison withtheoscillating frame until the engagement of the pin 68 with the end of theslot 67 and the engagement ofthe subclamp 43 with the paper arrest themotion of the rock-shaft 70, from which point the friction-clamp willslip upon. the friction-cylinder and cause a. certain pressurev to beexerted bythe subclamp u on the paper. t

It wil also be apparent that if any one or more of the hooks 88 iswithdrawn from its engaging position the corresponding frictionclampswill be thrown out of action and exert no influence upon the subclamp.

In the operation of power paper-cutting machines it is desirable to havethe clamp exert as great a pressure as possible uponfthe paper withoutproducing indentations therein, and if the clamp is adjusted to give thepro er pressurefor a broad cut it willbe found to e excessive for anarrower out. It will be scenthat by means of my construction theoperator may quickly and conveniently modify the action of the clamp tosuit the requirements as they arise.

During the upward movement ofthe oscillating frame the friction-clampsare returned to" their normal position by the engagement of thead'usting-screws 80 with the shaft 84. The ban Aing 90 is provided toarrest the movement of the friction clamps at the proper ppint -on theirreturn, the adjustingscrews 7 8 in the rear ends 77 of thefrictionclamps bei-ng ad apted to engage the banking 90 for thispurpose.

In all kinds of friction devices what is known as the starting frictionis far in excess of what is usually termed the running friction, or thefriction between the surfaces after they have begun to slip. It is,however,therunningfriction,or thefrictionwhich A 6o takes place duringthe slipping of the frictionclamps upon the friction-cylinder, which isrelied upon `to -hold the naper during the cuttingo eration, from Wlch-it follows that if `the friction device of a .paper-cutting machineis so adjusted as to give the maximum l clamping action obtainablewithout ini" the paper while the frictionis siippingis, while the cut isactually taking pl starting friction being far in L' 't running frictionwill be so great the aper. In order to mirjn; of t is peculiarity offri.' tion, I arrange friction-clamps so that they come "to r ationsuccessively, thereby avoiding the eessive starting friction which wouldoccur all of the friction-clamps came into actie. ksimultaneously. Thisis accomplished in following manner: 'l

The ad justing-screws 89, whit' by the shaft 84 during the 'rettion-clamps `by the upward me oscillating frame, are so adju the uppersurfaces of the n etico-clan which are engaged by the hooks 38sively-increasing heights, the engagir of the hooks being arranged at uiheights, so that during the downward ment of the oscillatingframe afterthe recit shaft has been arrested by the contact of the subclamp withthe paper the several fricne tion-clamps will corne into action succes-Asively, as will be clearly' seen in Figs. 7 and. Mounted on the table 2to the rear of the clamp-bars are the movable gage-brad t 91, 92, and93. These gage-braclmts are pres vided with rollers 94 to if eilitatetheir nir ment back and forth. Each 'i 1 also with vertical webs 95, iniv l gitudinal slots for the reception i ing-bolts 96. By means of thithe gage-frames may bf a forth relative to each. otl 10, 11, and .12,where the itral .-ii 92 is considerably in advance of the e frames 91and 93. The pin'pose of vconstruction is to provide feA bhe simultaneoustrimming or cutting of stacks .of di lV mensions--such, for in thedifferent edges of boo In the figures referred to, B repre whose edgesc, d., and e are to be trimmed or cut in the order named. For thispurpose the gage-frames 91, 92, and 93 will be ,adjusted so as to bringthe front or working face of the gage-iingers in proper relation, sothat ,a i single outv will trim the end C of the books gaged by theframe 91, the sides l) of the books on the frame 92, and the ends It ofthe books 'on the frame The books at the sides will be guided andali-ned by the side guides 110, as is usual. In order, however, toprovide for the trimming of a greater nunzber of books-at a time, Iprovide intermediate guides 111 and 112, which are joined by atransverse member 113, adapted to be secured in position by the bolts114 or in any other convenient manner.

In order to steady ntim. stacks, i. provide a top guide 115, which isalso secured in position by the belts .114C .or in any other cordon-13,@

" ner, and in order to provide for a urge of adjustment between thethree cer to provide for trimming very narrow book i. provide fillers116, which come bethi top guide 115 and the transverse lng bar 113.

is mounted in cach of the gagesome distance above the surface of le, andupon this shaft a number of xrs 9S are pivotally mounted. The ace 99 ofthe gage-fingers rests upon of the table, and the front face 'ht anglesthereto. .-'ingers are loosely' mounted on and may move independentlyand they are brought by graveontact with the surface of the 2e purposeof this construction is t0 between each of the ga e-inle surface ofthetable eveni there ari ties in the latter, and by having er of the shaft97, on which the gagei "Voted, iocated above the center e-surfaee of thega e-fmgers the einst gage-surface tends to ge-in sdown in contact withof the table. y

yelre 101 is secured to the ge rame 92 and has threaded holes f. hiehengage the screws 102. e mounted in brackets at the ie table and havefixed to their rear eied pinions 103, which 'mesh with Aons 104, fixedto the shaftA 1-05, on also y secured the spiral gear 106. i, 10S mesheswith the spiral i, ich is mounted on the shaft 108, uch extends fremtherear of the machine ur erneath the tabie to the front end thereof, i.Iwheel 109 is mounted. l be apparent from the drawings, the be vcdforward or backward by iii-wheel 109. By means of i table, and by theengagement of v10.1 'with the screws 102at points A ed the accuratea'linement of s is easiiy adjusted and maintained. 'hus d escribedvmyinvention, what in a paper-cutting machine the combina. ien. with aclamp-b ar of a plurality of frict' said clam -bar and for separatelythrowing sai friction devices into and out of action.

2. In a paper-cutting machine the combination with a clamp-bar, of afriction mechvriem adapted to actuate said clamp-bar proce l 'f 'fhmeans for automatically increasi i clamp-bar after its moting machinethe combipar of a frictional clampyhamsm provided with actuatmg 1;.

mies 91, 92, and 93, and especially in.

tlon of means on I avoid the usual central means for varying the powerwhich said clamp exerts upon the paper in a predetermined manncr.

4. In a' paper-cutting machine the combination with a clamp-bar of aplurality of Jlamp-bar-actuating devices each capable of producing aclamping action of certain power and means for bringing a plurality ol'sald clamp bar'- actuating devices successively into action.

5. In a aper-cutting machine the combination Wit 1 a clamp-bar of apower-actuated member, a plurality of friction devices ad apted toconnectsaid power-actuated member to`said lclamp-bar and means forindependently throwing said friction devices into and out of action toregulate the power of the clamping action of said clamp-bar.

n a paper-cutting. machine the combination with a clamp-bar, apower-actuated member, a plurality offriction devices adapted to connectsaid power-actuated member to said clamp-bar and means for independentlythrowing said friction devices into acl for increasing the power of saidclamp-bar after its motion has been arrested by contact with the paper.v In a aper-cutting machlne the combination wit a clamp-bar of apower-actuated member, a plurality of friction devices adapted toconnect said power-actuated member with said clamp-bar and means forseverally throwing said friction devices into action, and causing themto act successively upon said clamp-bar.

8. In a paper-cutting machine the combination with a clamp-barof arock-shaft, con.- nections between said rock-shaft and said clamp-barand plurality of friction devices each adapted to move said rock-shaftwith a predetermined power and means for putting said friction devicesinto action independently.

9. In a aper-cutting machine the combination wit a power-actuatedclamp-bar, of a rock-shaft, connections .between said rockshaft and saidclamp-bar, a plurality of friction devices each adapted to move saidrockar successively.

l0. In a aper-cutting machine the combination wit a clamp-bar, arock-shaft and connections between the rock shalt and clamp-bar, of apower-actuated reciprocating member a plurality of frictionalconnections between the reciprocating member' and rock-shaft, and meansfor throwing said frictional connections into and out of actionseverally.

1 1. In a paper-cutting machine the combination with a clamp-bar, arock-shaft and connections between the rockslt-.ift and IOG- IOS

IIO

l a predetermined power, meansfor l.

clei1ioi e'i, ol" e power-driven rcciprocntiile member pivotzilly:ittztched to the seid shul'lt, devices in lrii-,tionatl enge-gement'with sind rock-shaft :ind ineens to enen-ge und disons gege seid pow,r-(,lriven member and seid dcviccs.

l2. ln n Aympciecutting machine the combi nntion with o clump-burr, erock-shalt :nu:

connections be'irween seid cln'mp-lmr end sind i rock-shalt, ol' efriction-cylinder secured to seid rock-slmfte friction ineniber mountedon seid lrictn,i1-cylinder infrictionel engagement therewith, e.Ypovvei=ihriven reciprocating member end ineens for operatively engagingund disengngingl seid reciprocatingl member with scid l`ri .:tionniember. A

13. ln e. pnpeneutting mnchine the combination with :t chemo-ber, si.rock-shaft end connectuins betwcenfsnid. clamp-ber and seid rock-shel`t,oi e lirictio.ncylinfiier secured to sind rock-shot@ a. plurality ol`Yfriction ineinbcrs mounted on seid (.:ylinder in/'irictionol engagementtherewith, :i power-driven shaft hai-ving n. cem n'iountcd thereon,:r'reciprocating member :ictinited by seid cern and ineens i'o'rsevernlly engeging and disengeging s fnd 'friction nien'ibers l'rom seidreciprocating ineniber.

14. .in si peper-cutting machine the combination with n, clmnp-bnr, o.roclesheft end connections between seid clamp-ber end seid rock-shaft,ol :t l`riction-cylin(ler secured to seid roeleslml'l', :i plurality oif'friction members mounted on seid cylinder in L irictionnl engagementtherewith, n yowcrdriven. shalt lutvilnr it com mounted thi-troon, ereciprocating member actuated by seid een), n ineens for causing seidfriction inem-- bers to engage seid reciprmxnting member consecutivelyel'ter the descent ol' the clnmpbei' hos been.nrrested by coming intoContact with the peper. Y

15. ln n pn )oncoming machine the combination with t 1e knife-ber, ol :icrznik-slntil'., e crunk thereon,. connections between seid crank endseid knife-lun', e power-driven shaft geared to said crank-shaft, :1.elinnp-lntr, ai rocksbocft, conmwctions between said elemp- `ber sindseid rock-shalt a cznn upon seid po\.ver -driven shalt, a.reciprocating?T nieniber actuated by seid cmu, a lrictionsil connoctiruibetween seid reci proce-ting member and seid rock-sluil't und ineens foroperatively engagin g end disengeging seid fric-,tional connection.

16. In e voeper-cutting `inechine the combi.- netion with e knife-ber, ncrankshaft, e crank thereon, connections between seid crank und seidknife-ber, of a power-driven shaft geared to said crenk-sheft, :tclamp-bin?, a. rocleshsft, e plurality ol' friction. devices connectingseid reciprocating member and iock-siiui"t, connections betweenclo'inpbnfr end seid rocleslutiit.

i7. .lin n piper-cutting machine the combine/tion with n. pow'er-e't.lated cutter :fer mid e n(nver-mftueted clamp-ber, oil e subelenip`lever and said Subcla-mp move in. the seine direction.

i8. in e pnpencutting machine the eonxbination with e 'flat tablesupported by a suit zible framework, of e cutter-ber and elempberoperatively mounted across the forward end oi seid table, e back gagemounted on seid table to the rearof said clamp-ber, screws mounted etfind parallel to the longitudinal sides ol seid table, n yoke secured toseid back gage in threaded engagement with said screws, e transverseshelt mounted on the rea-r end olt seid trible in geared connection withseid screws, e. shaft in geared connection with seid transverseshaftcxtendiiiigbeneeth seid table to tlm'lrontofseid 'nmehine and ahund-wheel on seid lest-named shaft.

'19. ln @paper-cutting machine the combination with n shaft adapted tobe continuously driven, of e cutter-ber, actuating mechanism for seidcutter-imi', e clutch adapted to eonneet seid eontinuously-driven shaftwith said actuating mechanism, e. weight pivotelly mountwl on e r'embcrdriven by seid clutch und 'ineens :tctuetee by said weight to throw seidclutch out ol engagement et e predetermined point in the revolution ofseid member.

2l). ln n mper-cuttiner machine the combination witli the cutter-ban ecrank-shaft, cranks on seidshaf t, and connecting-rods between suidcranks and said cutter-ber, oi e contimwusly-driven shaft, gearedconnections between seid continuously-drivcn shaft and seid crank-shaft,e clutch between said contimiously-driven shaft and. seid gearedconnections7 e weighted arm unted concentricelly with an element oi seidreared connections, ineens on seid element adapted to ,lift seid weightduring half' a revolution of said element endperinittin r said weight todrop away from seid ineens e ter it has passed the highest point in itsrevolution and ineens engaged by seid weight during its descent, tothrow seid clutch out of engagement.

21. In e papercutting machine the combination with n cutter-bar and acrenk-sheftfor operating seid cutter-ber, of e continuously drivenshaft, en intermediate shaft geared to seid crankshaft-and to nclutchineinber 'on seid continuouslyfdriven shaft, of e Weighted erinonv seid intermediate shaft, a lug secured to said in ternediete shaftadapted to engage seid weighted arm during the ascending half oiitsrevolution and permitting it to drop during the descending half ot'its revolution by gravityF sind means en raged by seid erin to throwsind. clutch out o. engagement.

IOO

v 22. in a papencutting machine the combination with the cutter-bar andcrank-shaft adapted to operate said cuttenbar, of a powerdriven shaft, aclutch member mounted on Said power-driven shaft, geared connectionsbetween said clutch member and said cranlrshaft, a frictiombrake andmeans for auto-l matically unclutching said power-driven shaft from.said geared connections, and throwing said friction-brake into action toar- A rest the motion of said crank-shaftat -a preby theengageinent ofthe disengagement of the other.

determined point in a revolution.

23. ina paper-cutting machine theV combination with thecutter-baracti1ati1ig mechanism, of a friction-clutch composed of twomembers one of whichis held against rotation, l the other being securedto a rotatingl element of the cutter-bar-actnating mechanism, and meansfor automatically engaging said clutch members to stop the machine.

' 24. In a paper-cutting maf-,lune tinl conzbination with acutter-bfar-actuating mechanism, of a friction-clutch composed of twomembers, one of which is in geared connection\with said operatingmechanism, the otherbeing held against rotation, and .means forautomatically engaging said members to sto p the machine.

25. In a paper-cutting machine the combination with acutter-bar-actirating mechan-` ism, ofadriving-sl1aft and a stationaryshaft each carrying friction`-clutch members in geared connection withsaid actuating mechanism, enacting clutch members rotatably fixed uponsaid driving-shai`t and said stationary shaft respectively, and .meansconnecting said enacting clutch :members where`v one is accompanied by26. .in a papeiwutting machine, the co1ubi nation with a power-actuatedcutterbar and a clamp, of engaging means between saidcutter-bar. andsaid clamp, iihcrcby said clamp is raised by said cutter-bar, andlowered by gravity in Contact therewith, and a friction mechanism adated to act upon said clamp-hal' before am during the cutting op`eration.

27. in a papencutting machine the combination witn a clam i-bar of adownwardl T- projecting` rib ext-em ing along the iront edge of litslower surface and an elastic shoe be hindsaid rib. f

2S, ln a paper-cutting machine the combi.- nation with a table, of abackgage extending transversely.across said tablemade in a-plurality ofsections adjustable relative to each other, a transverse yoke secured toone of said sections, and means for operating said yoke forward andbackward. y

29. In a `:iper-cutting machine,thc combination wit i a power-actuated.knife and clamp, of means for automatically causing the clamp todescend in advance of the knife, a friction mechanism adapted to causethe clamp to exert pressure upon a stack of pap after its descentlhasbeen arrested, means for releasingr the pressure upon the clamp ai'- torthe cut has been completed, and means permitting said clamp to remain incontact with the ieperA until alter the cutting edge of the lni e hasrisen above the stack on itsv return A stroke. v V l .In testimonywhereof I have signed my name to this specification in the presence oftwo subecribinr witnesses.

JAMES G. HARDIF. Witnesses Uno. E. HARDY, Casin C. N nwKaAN'rz.

